Two members of the League of Social Democrats, including lawmaker 'Long Hair' Leung Kwok-hung, were given community service yesterday for assaulting a police officer during a protest outside Government House in December 2007. Magistrate Rickie Chan Kam-cheong sentenced Leung to 120 hours of community service and Andrew To Kwan-hang, a district councillor, to 100 hours, and warned that while Hong Kong guaranteed civil liberties, they had to be exercised in a lawful, peaceful manner. He said they could not 'take the law into their own hands' just because they felt police were acting inappropriately. The magistrate said any violation of their service terms would mean a new sentence and increase the chance of imprisonment. Leung and To were found guilty of assault early last month for using 'illegal force' in preventing a policeman from disrupting their protest. The incident occurred during a demonstration by about 700 people outside Government House to condemn Beijing's decision to rule out universal suffrage in 2012. While the National People's Congress Standing Committee deputy secretary general Qiao Xiaoyang was inside, the pair set fire to paper inside a tyre to represent the 'foul and poisonous air' in Hong Kong society. A policeman came forward with a fire extinguisher, resulting in a scuffle and the officer being knocked to the ground. Mr Chan said the pair had had no intention of causing harm, but that they had displayed a lack of judgment in choosing 'physical contact' to stop the officer putting out the fire. Leung and other League members outside the court condemned what they said was 'political prosecution'. Leung said he would appeal. 'Does this mean that in the future, one police officer can have the power to just come in and put an end to a demonstration?' he said.